This is an artifact mirror, so Vandalblast is a devastating two-for-one against Kappa Cannoneer, Pinnacle Emissary, and Weapons Manufacturing, while Damping Sphere throttles their explosive Mox Opal into Urza's Saga starts and taxes their value engines. Strix Serenade is cheap, efficient interaction to answer a Kappa Cannoneer or protect your own threats. Metallic Rebuke loses value since their affinity shell reduces its cost just as much as yours and they run their own copies, so trim it for more proactive artifact hate. Race with Cori-Steel Cutter and Tamiyo, saving Vandalblast to blow up their board when they're tapped out and can't rebuild.